QMC 4055C

ASME B30.5 / IMPERIAL 85%

Basis of Design
Item Description Remarks
Truck chassis Per customer
Driver weight 250 pounds Included in analysis
Fuel tank 100 gallons Included in analysis
Hydraulic tank 75 gallons Included in analysis, location may vary
Tool box 36” long Size may vary, aluminum construction
Minimum Frame Requirements

Minimum selection modulus per rail = 17.8 in.3

Minimum yield strength = 110 KSI

Weight Distribution
  Front Rear Total
Truck 10,640 4,730 15,370
Crane 6,000 13,750 19,750
Payload 1,160 1,520 2,680
Totals 17,800 20,000 37,800

Total axle limits shown are based on Federal D.O.T. regulations bridge formula.

Truck dimensions, weights, payload, and lifting performance representative of design baseline. Variations from information shown (truck weights, wheel base, front axle to back of cab, and more) may be accommodated and may result in adjustment of payload, payload size, and crane lifting capacity. Contact QMC Cranes with your requirements.

Load Chart

24 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
6 77 45,400 45,400 45,400
8 72 45,400 45,400 45,400
10 67 40,200 40,200 40,200
12 61 35,400 35,400 35,400
15 52 30,200 30,200 30,200
18 42 24,900 24,900 17,600
20 33 22,100 22,100 12,700
23 0 17,800 16,800 8,500
39 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
10 78 36,000 36,000 36,000
12 75 31,200 31,200 31,200
15 70 26,100 26,100 26,100
18 65 22,700 22,700 18,100
20 61 20,900 20,900 13,200
25 52 17,000 13,600 7,400
30 42 13,000 8,400 4,800
35 27 10,300 5,700 3,200
38.5 0 8,900 4,500 2,500
55 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
15 78 22,300 22,300 22,300
18 74 19,800 19,800 18,300
20 72 18,200 18,200 13,400
25 66 14,700 13,800 7,500
30 60 12,400 8,500 4,900
35 53 10,400 5,900 3,400
40 46 8,600 4,300 2,400
45 37 7,200 3,200 1,700
50 25 6,000 2,400 1,200
54 0 5,200 1,900 900

Red lines indicate transition from structural to tipping limits. Loads above the line are based on structural limits. Loads below the line are based on 85% actual tipping condition per ASME B30.5.

Wire Rope Capacity
Parts Line 1 2 3 4 5 6 7 8
Load Limit 9,080 18,160 27,240 36,320 45,400 0 0 0

Do not exceed parts of line ratings.

  1. Load does not include blocks, slings, and all other equipment used to handle objects being lifted.
  2. Load ratings are for zero degree list.
  3. Loads must be freely suspended.
  4. Rope: Rotation resistant, compacted strand, 9080 lb. capacity.
  5. This chart is only a guide and should not be used to operate the crane. Individual crane’s load chart, operating instructions, and other instructional plates must be read and understood prior to operating crane.